Suscripción a Biblioteca: Guest
Portal Digitalde Biblioteca Digital eLibros Revistas Referencias y Libros de Ponencias Colecciones
Atomization and Sprays
Factor de Impacto: 1.737 Factor de Impacto de 5 años: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 2.2

ISSN Imprimir: 1044-5110
ISSN En Línea: 1936-2684

Volumes:
Volumen 30, 2020 Volumen 29, 2019 Volumen 28, 2018 Volumen 27, 2017 Volumen 26, 2016 Volumen 25, 2015 Volumen 24, 2014 Volumen 23, 2013 Volumen 22, 2012 Volumen 21, 2011 Volumen 20, 2010 Volumen 19, 2009 Volumen 18, 2008 Volumen 17, 2007 Volumen 16, 2006 Volumen 15, 2005 Volumen 14, 2004 Volumen 13, 2003 Volumen 12, 2002 Volumen 11, 2001 Volumen 10, 2000 Volumen 9, 1999 Volumen 8, 1998 Volumen 7, 1997 Volumen 6, 1996 Volumen 5, 1995 Volumen 4, 1994 Volumen 3, 1993 Volumen 2, 1992 Volumen 1, 1991

Atomization and Sprays

DOI: 10.1615/AtomizSpr.2017019293
pages 835-846

AN EXTENSIVE STUDY ON THE DISCHARGE COEFFICIENTS OF OPEN-TYPE SWIRL INJECTORS

Kyubok Ahn
School of Mechanical Engineering, Chungbuk National University, Chungbuk, Korea
Hwan-Seok Choi
Combustion Chamber Department, Korea Aerospace Research Institute, Daejeon, Korea

SINOPSIS

Extensive studies on the discharge coefficients of open-type swirl injectors, which have a swirl chamber diameter equal to their nozzle diameter, have been conducted. Nineteen open-type swirl injectors with a broad range of swirl injector geometric constants from 2.86 to 18.13 were designed and manufactured. When varying the injection pressure drop from approximately 8 bar to 12 bar, static pressure and flow rate data were collected and analyzed to calculate the discharge coefficient. The measured discharge coefficients were confirmed to be precisely expressed as a function of the swirl injector geometric constant. Previous empirical equations, respectively induced from closed-type swirl injectors and open-type swirl injectors, were compared with the present experimental results to examine their accuracy. Though previous equations from open-type swirl injectors were better than those from closed-type swirl injectors, most of the equations could not satisfactorily predict the discharge coefficients from the present study. Two novel equations for the discharge coefficient of open-type swirl injectors are suggested: one was empirically obtained through a linear regression analysis of the present test data and the other was derived by modifying the design method of the closed-type swirl injector. It was found that both the modified design method and the present empirical equation matched well with the experimental data. Another equation, which can be used both for closed-type and open-type swirl injectors, is also proposed from a non-linear regression analysis using previous and present experimental data.


Articles with similar content:

A STUDY ON DISCHARGE COEFFICIENTS OF CLOSED-TYPE SWIRL INJECTORS FOR A LIQUID ROCKET ENGINE
Atomization and Sprays, Vol.27, 2017, issue 7
Kyubok Ahn, Hwan-Seok Choi
SPRAY CHARACTERISTICS OF AN OPEN-END SWIRL INJECTOR
Atomization and Sprays, Vol.22, 2012, issue 5
Wei Zhang, Qing-Fei Fu, Kun-Da Cui, Li-Jun Yang
OPTIMAL AND NONOPTIMAL FLOWS IN A SWIRL ATOMIZER
Atomization and Sprays, Vol.19, 2009, issue 12
S. N. Patel, L. Craig, B. Kanya, Nathaniel Barlow, Sung P. Lin
CHARACTERIZATION OF PROTOTYPE HIGH-PRESSURE SWIRL INJECTOR NOZZLES, PART II: CFD EVALUATION OF INTERNAL FLOW
Atomization and Sprays, Vol.10, 2000, issue 2
Sangmin Choi, Changsoo Jang, Choongsik Bae
FURTHER DEVELOPMENTS OF A NOVEL SELF-DRIVEN SPRAY NOZZLE
Atomization and Sprays, Vol.16, 2006, issue 7
Weiping Liu, George H. Smith, Edward H. Owens, Mark T. Leonard